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100-00-17 General Information 100-00-17 DESCRIPTION AND OPERATION (Continued) All instrument gauges (except fuel gauge) read Brake Testing zero. With the ignition switched on, check: WARNING: When brake testing, avoid breathing the smoke or fumes from hot brakes, Ignition controlled warning lights come on. this may contain asbestos dust which is Engine temperature gauge registers a reading hazardous to health, see Health and Safety compatible with the engine temperature. Precautions. Fuel gauge registers a reading appropriate to the Avoid brake testing on busy roads where it can cause fuel level in the tank. inconvenience or danger to other road users. The operation of the handbrake warning light and fluid level warning indicator light. CAUTION: Brake testing which includes heavy brake applications should not be carried On Road or Roller Test Check: out with new brake pads/discs or linings/drums until the components have bedded-in. New brake CAUTION: If road testing, check the brake friction components will not reach full efficiency operation while still travelling at low speed before until the bedding-in process is complete. continuing with the test. If the brakes pull to one Test the brakes at several speeds within the normal side, or appear to be otherwise faulty, do not operating range using both light and heavy pedal continue with the road test until the fault has been pressure. Note any tendency to snatch, pull or drag, found and rectified. and any undue delay in application or release. Clutch pedal operation is not stiff or heavy. Allow the vehicle to coast and note any tendency to Initial gear engagement is smooth and there is no pull to one side, or evidence that the brakes are evidence of clutch drag. binding. Handbrake control operates smoothly and the After stopping the vehicle (not immediately after a handbrake releases quickly and completely. period of heavy braking), carefully check the brake Clutch takes up the drive smoothly, without slip or temperature. A disc which feels hot, or appreciably judder. hotter than the others, indicates that the brake is binding. Gear changing is smooth, and there are no abnormal noises or vibrations from the After completion of the test, check for: transmission. Oil, coolant, hydraulic, air and fuel leaks. The engine power output is satisfactory, full power Abnormal temperature of any moving components is achieved, acceleration is smooth and pedal or assemblies, e.g. wheel hubs, transmission, operation not stiff or heavy, and engine speed axle etc., which might indicate overtightness or returns to idle correctly. lack of lubrication. There is no excessive or abnormally colored smoke from the engine under normal driving, heavy load or overrun conditions. where fitted, is smooth, accurate, not excessively heavy or with excessive free play or vibration. Does not pull to one side and self centres smoothly after cornering. temperature gauge and tachometer (where fitted) register the correct readings or operate correctly. positively, warning or indicator lights operate correctly and the direction indicator control self cancels when the steering is returned to the straight ahead position. and effectively. G17375 en |